docs: Update docs for schedule-precedence in ConfigMap

Signed-off-by: Niraj Yadav <niryadav@redhat.com>

Author: black-dragon74

docs/csi-addons-config.md

@@ -4,14 +4,17 @@ CSI-Addons Operator can consume configuration from a ConfigMap named `csi-addons
 in the same namespace as the operator. This enables configuration of the operator to persist across
 upgrades. The ConfigMap can support the following configuration options:
 
-| Option                      | Default value | Description                                      |
-| --------------------------- | ------------- | ------------------------------------------------ |
-| `reclaim-space-timeout`     | `"3m"`        | Timeout for reclaimspace operation               |
-| `max-concurrent-reconciles` | `"100"`       | Maximum number of concurrent reconciles          |
-| `max-group-pvcs`            | `"100"`       | Maximum number of PVCs allowed in a volume group |
+| Option                      | Default value | Description                                               |
+| --------------------------- | ------------- | --------------------------------------------------------- |
+| `reclaim-space-timeout`     | `"3m"`        | Timeout for reclaimspace operation                        |
+| `max-concurrent-reconciles` | `"100"`       | Maximum number of concurrent reconciles                   |
+| `max-group-pvcs`            | `"100"`       | Maximum number of PVCs allowed in a volume group          |
+| `schedule-precedence`       | `"pvc"`       | The order in which the schedule annotation should be read |
 
 [`csi-addons-config` ConfigMap](../deploy/controller/csi-addons-config.yaml) is provided as an example.
 
 > Note: The operator pod needs to be restarted for any change in configuration to take effect.
 >
 > Note: `max-group-pvcs` default value is set based on ceph's support/testing. User can tweak this value based on the supported count for their storage vendor.
+>
+> Note: The valid values for `schedule-precedence` are `storageclass` and `pvc`. If set to `storageclass` only the annotations from StorageClasses are considered for schedule of reclaim space and key rotation. `pvc` reads annotations in the order of: PVC > NS > StorageClasses.